Major-oxide and trace-element geochemical data from rocks collected in 2015 in lower Cook Inlet, Iniskin - Tuxedni region, Alaska

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What does this data set describe?

1. How should this data set be cited?

   Wypych, Alicja, Gillis, R.J., Betka, P.M., and Decker, P.L., 2016, Major-oxide and trace-element geochemical data from rocks collected in 2015 in lower Cook Inlet, Iniskin - Tuxedni region, Alaska: Raw Data File RDF 2016-3, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

   Online Links:

   • <http://dx.doi.org/10.14509/29575>

   Other_Citation_Details: 2 p.

2. What geographic area does the data set cover?

   West_Bounding_Coordinate: -153.019500

   East_Bounding_Coordinate: -152.877580

   North_Bounding_Coordinate: 60.157350

   South_Bounding_Coordinate: 59.973810

3. What does it look like?

4. Does the data set describe conditions during a particular time period?

   Calendar_Date: 2015

   Currentness_Reference: publication date

5. What is the general form of this data set?

   Geospatial_Data_Presentation_Form: report and digital data

6. How does the data set represent geographic features?
   1. How are geographic features stored in the data set?

      This is a point data set.

   2. What coordinate system is used to represent geographic features?

      Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest .000001. Longitudes are given to the nearest .000001. Latitude and longitude values are specified in decimal degrees.

      The horizontal datum used is North American Datum of 1927.
      The ellipsoid used is Clarke 1866.
      The semi-major axis of the ellipsoid used is 6378206.4.
      The flattening of the ellipsoid used is 1/294.9786982.
      

7. How does the data set describe geographic features?

   rdf2016-3-border.shp

   Outline of the study area. (Source: Alaska Division of Geological & Geophysical Surveys)

   rdf2016-3-rock-major-oxide-trace-element.csv, rdf2016-3-rock-major-oxide-trace-element-limits.csv

   Major- and minor-oxide and trace-element analysis of rock samples. (Source: Alaska Division of Geological & Geophysical Surveys)

   SAMPLE

   Label assigned to identify the sample. (Source: Alaska Division of Geological & Geophysical Surveys)

   Generic example of a sample identifier: YYAAA9999X: YY=last two digits of year, AAA=geologist's initials (one to three characters), 9999=unique station number, X= optional alpha character which indicates that multiple samples were collected at a given location or that multiple observations were recorded in the project database.

   LAB_SAMPLE_NUMBER

   Label used by the lab to identify the sample. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Minerals)

   Value	Definition
   NULL	The lab sample number is identical to the sample number.

   The lab sample number is typically identical to the sample number. However, in some cases, the sample number used by the lab does differ from the published sample number. We provide both numbers to document instances in which the sample numbers listed on the Certificate of Assay or other laboratory results files were non-standard or found to be incorrect.

   BATCH_NUMBER

   Number provided by the laboratory to identify the samples and analyses included in the work order. (Source: ALS Minerals)

   Value	Definition
   NULL	The lab sample number is identical to the sample number.

   FA16005009

   LONGITUDE

   Longitude, NAD27 (Source: Alaska Division of Geological & Geophysical Surveys)

   Range of values
   Minimum:	-153.0195
   Maximum:	-152.87758
   Units:	decimal degrees

   LATITUDE

   Latitude, NAD27 (Source: Alaska Division of Geological & Geophysical Surveys)

   Range of values
   Minimum:	59.97381
   Maximum:	60.15735
   Units:	decimal degrees

   SAMPLE_MATERIAL

   Type of material that was sent to the lab for processing. (Source: Alaska Division of Geological & Geophysical Surveys)

   rock

   COLLECTOR

   The geologist who collected the sample. (Source: Alaska Division of Geological & Geophysical Surveys)

   The samples presented in this report were collected by: Alicja Wypych, Paul L. Decker, Paul M. Betka, and Robert J. Gillis

   DESCRIPTION

   Description of the sample (Source: Alaska Division of Geological & Geophysical Surveys)

   Characters 1 to 254 of a brief sample or station description.

   DESCRIP_2

   Extension of the sample or station description for descriptions which are greater than 254 characters in length (Source: Alaska Division of Geological & Geophysical Surveys)

   Value	Definition
   NULL	The descriptive text is shorter than 254 characters.

   Characters greater than 254 of the sample or station description.

   WEIGHT_KG

   Sample weight (as received by the lab) in kilograms (Source: Alaska Division of Geological & Geophysical Surveys and ALS Minerals)

   Range of values
   Minimum:	0.37
   Maximum:	1.24
   Units:	kilograms

   SiO2_pct_ME-ICP06

   Silicon dioxide values measured in percent; Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Lithium Borate Fusion; Lower detection limit = 0.01 percent; Upper detection limit = 100 percent; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Range of values
   Minimum:	50
   Maximum:	72.6
   Units:	percent

   Al2O3_pct_ME-ICP06

   Aluminum oxide values measured in percent; Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Lithium Borate Fusion; Lower detection limit = 0.01 percent; Upper detection limit = 100 percent; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Range of values
   Minimum:	11.25
   Maximum:	18.8
   Units:	percent

   Fe2O3_pct_ME-ICP06

   Iron oxide (+3) values measured in percent; Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Lithium Borate Fusion; Lower detection limit = 0.01 percent; Upper detection limit = 100 percent; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Range of values
   Minimum:	3.05
   Maximum:	14.85
   Units:	percent

   CaO_pct_ME-ICP06

   Calcium oxide values measured in percent; Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Lithium Borate Fusion; Lower detection limit = 0.01 percent; Upper detection limit = 100 percent; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Range of values
   Minimum:	0.76
   Maximum:	9.24
   Units:	percent

   MgO_pct_ME-ICP06

   Magnesium oxide values measured in percent; Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Lithium Borate Fusion; Lower detection limit = 0.01 percent; Upper detection limit = 100 percent; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Range of values
   Minimum:	0.37
   Maximum:	5.69
   Units:	percent

   Na2O_pct_ME-ICP06

   Sodium oxide values measured in percent; Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Lithium Borate Fusion; Lower detection limit = 0.01 percent; Upper detection limit = 100 percent; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Range of values
   Minimum:	1.68
   Maximum:	5.46
   Units:	percent

   K2O_pct_ME-ICP06

   Potassium oxide values measured in percent; Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Lithium Borate Fusion; Lower detection limit = 0.01 percent; Upper detection limit = 100 percent; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Range of values
   Minimum:	0.22
   Maximum:	3.14
   Units:	percent

   Cr2O3_pct_ME-ICP06

   Chromium oxide values measured in percent; Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Lithium Borate Fusion; Lower detection limit = 0.01 percent; Upper detection limit = 100 percent; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Value	Definition
   -1	Below detection limit.

   Range of values
   Minimum:	0.01
   Maximum:	0.03
   Units:	percent

   TiO2_pct_ME-ICP06

   Titanium dioxide values measured in percent; Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Lithium Borate Fusion; Lower detection limit = 0.01 percent; Upper detection limit = 100 percent; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Range of values
   Minimum:	0.31
   Maximum:	0.99
   Units:	percent

   MnO_pct_ME-ICP06

   Manganese oxide values measured in percent; Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Lithium Borate Fusion; Lower detection limit = 0.01 percent; Upper detection limit = 100 percent; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Range of values
   Minimum:	0.05
   Maximum:	0.21
   Units:	percent

   P2O5_pct_ME-ICP06

   Phosphorus oxide values measured in percent; Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Lithium Borate Fusion; Lower detection limit = 0.01 percent; Upper detection limit = 100 percent; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Range of values
   Minimum:	0.06
   Maximum:	0.2
   Units:	percent

   SrO_pct_ME-ICP06

   Strontium oxide values measured in percent; Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Lithium Borate Fusion; Lower detection limit = 0.01 percent; Upper detection limit = 100 percent; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Range of values
   Minimum:	0.01
   Maximum:	0.05
   Units:	percent

   BaO_pct_ME-ICP06

   Barium oxide values measured in percent; Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Lithium Borate Fusion; Lower detection limit = 0.01 percent; Upper detection limit = 100 percent; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Range of values
   Minimum:	0.02
   Maximum:	0.11
   Units:	percent

   LOI_pct_OA-GRA05

   Loss on Ignition values measured in percent; Method: Gravimetric (GRAV), Thermal decomposition furnace; Lower detection limit = 0.01 percent; Upper detection limit = 100 percent; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Range of values
   Minimum:	0.77
   Maximum:	7.25
   Units:	percent

   Total_pct_TOT-ICP06

   Total values measured in percent; Method: Calculation (Calculation); Lower detection limit = 0.01 percent; Upper detection limit = 100 percent; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Range of values
   Minimum:	99.4
   Maximum:	101.76
   Units:	percent

   C_pct_C-IR07

   Carbon values measured in percent; Method: Combustion Furnace (Combustion Furnace); Lower detection limit = 0.01 percent; Upper detection limit = 50 percent; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Range of values
   Minimum:	0.01
   Maximum:	0.73
   Units:	percent

   S_pct_S-IR08

   Sulfur values measured in percent; Method: Combustion Furnace (Combustion Furnace); Lower detection limit = 0.01 percent; Upper detection limit = 50 percent; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Value	Definition
   -1	Below detection limit.

   Range of values
   Minimum:	0.01
   Maximum:	0.37
   Units:	percent

   Ba_ppm_ME-MS81

   Barium values measured in parts per million; Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Borate Fusion; Lower detection limit = 0.5 parts per million; Upper detection limit = 10000 parts per million; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Range of values
   Minimum:	152
   Maximum:	977
   Units:	parts per million

   Ce_ppm_ME-MS81

   Cerium values measured in parts per million; Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Borate Fusion; Lower detection limit = 0.5 parts per million; Upper detection limit = 10000 parts per million; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Range of values
   Minimum:	10.6
   Maximum:	21
   Units:	parts per million

   Cr_ppm_ME-MS81

   Chromium values measured in parts per million; Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Borate Fusion; Lower detection limit = 10 parts per million; Upper detection limit = 10000 parts per million; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Value	Definition
   -1	Below detection limit.

   Range of values
   Minimum:	10
   Maximum:	220
   Units:	parts per million

   Cs_ppm_ME-MS81

   Cesium values measured in parts per million; Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Borate Fusion; Lower detection limit = 0.01 parts per million; Upper detection limit = 10000 parts per million; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Range of values
   Minimum:	0.07
   Maximum:	2.88
   Units:	parts per million

   Dy_ppm_ME-MS81

   Dysprosium values measured in parts per million; Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Borate Fusion; Lower detection limit = 0.05 parts per million; Upper detection limit = 1000 parts per million; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Range of values
   Minimum:	2.49
   Maximum:	6.25
   Units:	parts per million

   Er_ppm_ME-MS81

   Erbium values measured in parts per million; Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Borate Fusion; Lower detection limit = 0.03 parts per million; Upper detection limit = 1000 parts per million; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Range of values
   Minimum:	1.51
   Maximum:	3.91
   Units:	parts per million

   Eu_ppm_ME-MS81

   Europium values measured in parts per million; Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Borate Fusion; Lower detection limit = 0.03 parts per million; Upper detection limit = 1000 parts per million; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Range of values
   Minimum:	0.68
   Maximum:	1.17
   Units:	parts per million

   Ga_ppm_ME-MS81

   Gallium values measured in parts per million; Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Borate Fusion; Lower detection limit = 0.1 parts per million; Upper detection limit = 1000 parts per million; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Range of values
   Minimum:	8.6
   Maximum:	19
   Units:	parts per million

   Gd_ppm_ME-MS81

   Gadolinium values measured in parts per million; Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Borate Fusion; Lower detection limit = 0.05 parts per million; Upper detection limit = 1000 parts per million; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Range of values
   Minimum:	2.54
   Maximum:	5.69
   Units:	parts per million

   Ge_ppm_ME-MS81

   Germanium values measured in parts per million; Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Borate Fusion; Lower detection limit = 5 parts per million; Upper detection limit = 1000 parts per million; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Value	Definition
   -1	Below detection limit.

   Hf_ppm_ME-MS81

   Hafnium values measured in parts per million; Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Borate Fusion; Lower detection limit = 0.2 parts per million; Upper detection limit = 10000 parts per million; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Range of values
   Minimum:	1.5
   Maximum:	3.9
   Units:	parts per million

   Ho_ppm_ME-MS81

   Holmium values measured in parts per million; Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Borate Fusion; Lower detection limit = 0.01 parts per million; Upper detection limit = 1000 parts per million; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Range of values
   Minimum:	0.54
   Maximum:	1.39
   Units:	parts per million

   La_ppm_ME-MS81

   Lanthanum values measured in parts per million; Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Borate Fusion; Lower detection limit = 0.5 parts per million; Upper detection limit = 10000 parts per million; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Range of values
   Minimum:	4.5
   Maximum:	9
   Units:	parts per million

   Lu_ppm_ME-MS81

   Lutetium values measured in parts per million; Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Borate Fusion; Lower detection limit = 0.01 parts per million; Upper detection limit = 1000 parts per million; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Range of values
   Minimum:	0.25
   Maximum:	0.69
   Units:	parts per million

   Nb_ppm_ME-MS81

   Niobium values measured in parts per million; Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Borate Fusion; Lower detection limit = 0.2 parts per million; Upper detection limit = 2500 parts per million; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Range of values
   Minimum:	0.9
   Maximum:	3.8
   Units:	parts per million

   Nd_ppm_ME-MS81

   Neodymium values measured in parts per million; Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Borate Fusion; Lower detection limit = 0.1 parts per million; Upper detection limit = 10000 parts per million; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Range of values
   Minimum:	7.9
   Maximum:	16.9
   Units:	parts per million

   Pr_ppm_ME-MS81

   Praseodymium values measured in parts per million; Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Borate Fusion; Lower detection limit = 0.03 parts per million; Upper detection limit = 1000 parts per million; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Range of values
   Minimum:	1.64
   Maximum:	3.35
   Units:	parts per million

   Rb_ppm_ME-MS81

   Rubidium values measured in parts per million; Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Borate Fusion; Lower detection limit = 0.2 parts per million; Upper detection limit = 10000 parts per million; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Range of values
   Minimum:	4.4
   Maximum:	40
   Units:	parts per million

   Sm_ppm_ME-MS81

   Samarium values measured in parts per million; Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Borate Fusion; Lower detection limit = 0.03 parts per million; Upper detection limit = 1000 parts per million; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Range of values
   Minimum:	2.37
   Maximum:	5.28
   Units:	parts per million

   Sn_ppm_ME-MS81

   Tin values measured in parts per million; Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Borate Fusion; Lower detection limit = 1 parts per million; Upper detection limit = 10000 parts per million; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Value	Definition
   -1	Below detection limit.

   Range of values
   Minimum:	1
   Maximum:	1
   Units:	parts per million

   Sr_ppm_ME-MS81

   Strontium values measured in parts per million; Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Borate Fusion; Lower detection limit = 0.1 parts per million; Upper detection limit = 10000 parts per million; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Range of values
   Minimum:	53.6
   Maximum:	439
   Units:	parts per million

   Ta_ppm_ME-MS81

   Tantalum values measured in parts per million; Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Borate Fusion; Lower detection limit = 0.1 parts per million; Upper detection limit = 2500 parts per million; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Value	Definition
   -1	Below detection limit.

   Range of values
   Minimum:	0.1
   Maximum:	0.5
   Units:	parts per million

   Tb_ppm_ME-MS81

   Terbium values measured in parts per million; Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Borate Fusion; Lower detection limit = 0.01 parts per million; Upper detection limit = 1000 parts per million; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Range of values
   Minimum:	0.43
   Maximum:	0.97
   Units:	parts per million

   Th_ppm_ME-MS81

   Thorium values measured in parts per million; Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Borate Fusion; Lower detection limit = 0.05 parts per million; Upper detection limit = 1000 parts per million; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Range of values
   Minimum:	0.4
   Maximum:	1.73
   Units:	parts per million

   Tm_ppm_ME-MS81

   Thulium values measured in parts per million; Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Borate Fusion; Lower detection limit = 0.01 parts per million; Upper detection limit = 1000 parts per million; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Range of values
   Minimum:	0.24
   Maximum:	0.64
   Units:	parts per million

   U_ppm_ME-MS81

   Uranium values measured in parts per million; Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Borate Fusion; Lower detection limit = 0.05 parts per million; Upper detection limit = 1000 parts per million; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Range of values
   Minimum:	0.18
   Maximum:	0.86
   Units:	parts per million

   V_ppm_ME-MS81

   Vanadium values measured in parts per million; Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Borate Fusion; Lower detection limit = 5 parts per million; Upper detection limit = 10000 parts per million; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Range of values
   Minimum:	12
   Maximum:	500
   Units:	parts per million

   W_ppm_ME-MS81

   Tungsten values measured in parts per million; Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Borate Fusion; Lower detection limit = 1 parts per million; Upper detection limit = 10000 parts per million; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Value	Definition
   -1	Below detection limit.

   Range of values
   Minimum:	1
   Maximum:	2
   Units:	parts per million

   Y_ppm_ME-MS81

   Yttrium values measured in parts per million; Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Borate Fusion; Lower detection limit = 0.5 parts per million; Upper detection limit = 10000 parts per million; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Range of values
   Minimum:	14
   Maximum:	35.5
   Units:	parts per million

   Yb_ppm_ME-MS81

   Ytterbium values measured in parts per million; Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Borate Fusion; Lower detection limit = 0.03 parts per million; Upper detection limit = 1000 parts per million; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Range of values
   Minimum:	1.46
   Maximum:	4.13
   Units:	parts per million

   Zr_ppm_ME-MS81

   Zirconium values measured in parts per million; Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Borate Fusion; Lower detection limit = 2 parts per million; Upper detection limit = 10000 parts per million; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Range of values
   Minimum:	40
   Maximum:	117
   Units:	parts per million

   As_ppm_ME-MS42

   Arsenic values measured in parts per million; Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Aqua regia; Lower detection limit = 0.1 parts per million; Upper detection limit = 250 parts per million; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Range of values
   Minimum:	1.3
   Maximum:	54.1
   Units:	parts per million

   Bi_ppm_ME-MS42

   Bismuth values measured in parts per million; Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Aqua regia; Lower detection limit = 0.01 parts per million; Upper detection limit = 250 parts per million; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Range of values
   Minimum:	0.01
   Maximum:	0.16
   Units:	parts per million

   Hg_ppm_ME-MS42

   Mercury values measured in parts per million; Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Aqua regia; Lower detection limit = 0.005 parts per million; Upper detection limit = 25 parts per million; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Value	Definition
   -1	Below detection limit.

   Range of values
   Minimum:	0.005
   Maximum:	0.054
   Units:	parts per million

   In_ppm_ME-MS42

   Indium values measured in parts per million; Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Aqua regia; Lower detection limit = 0.005 parts per million; Upper detection limit = 250 parts per million; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Range of values
   Minimum:	0.013
   Maximum:	0.067
   Units:	parts per million

   Re_ppm_ME-MS42

   Rhenium values measured in parts per million; Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Aqua regia; Lower detection limit = 0.001 parts per million; Upper detection limit = 250 parts per million; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Value	Definition
   -1	Below detection limit.

   Range of values
   Minimum:	0.001
   Maximum:	0.001
   Units:	parts per million

   Sb_ppm_ME-MS42

   Antimony values measured in parts per million; Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Aqua regia; Lower detection limit = 0.05 parts per million; Upper detection limit = 250 parts per million; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Value	Definition
   -1	Below detection limit.

   Range of values
   Minimum:	0.05
   Maximum:	3.04
   Units:	parts per million

   Se_ppm_ME-MS42

   Selenium values measured in parts per million; Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Aqua regia; Lower detection limit = 0.2 parts per million; Upper detection limit = 250 parts per million; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Range of values
   Minimum:	0.2
   Maximum:	0.8
   Units:	parts per million

   Te_ppm_ME-MS42

   Tellurium values measured in parts per million; Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Aqua regia; Lower detection limit = 0.01 parts per million; Upper detection limit = 250 parts per million; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Value	Definition
   -1	Below detection limit.

   Range of values
   Minimum:	0.01
   Maximum:	0.03
   Units:	parts per million

   Tl_ppm_ME-MS42

   Thallium values measured in parts per million; Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Aqua regia; Lower detection limit = 0.02 parts per million; Upper detection limit = 250 parts per million; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Value	Definition
   -1	Below detection limit.

   Range of values
   Minimum:	0.02
   Maximum:	0.03
   Units:	parts per million

   Ag_ppm_ME-4ACD81

   Silver values measured in parts per million; Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 0.5 parts per million; Upper detection limit = 100 parts per million; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Value	Definition
   -1	Below detection limit.

   Cd_ppm_ME-4ACD81

   Cadmium values measured in parts per million; Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 0.5 parts per million; Upper detection limit = 1000 parts per million; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Value	Definition
   -1	Below detection limit.

   Range of values
   Minimum:	0.6
   Maximum:	0.6
   Units:	parts per million

   Co_ppm_ME-4ACD81

   Cobalt values measured in parts per million; Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 1 parts per million; Upper detection limit = 10000 parts per million; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Range of values
   Minimum:	3
   Maximum:	36
   Units:	parts per million

   Cu_ppm_ME-4ACD81

   Copper values measured in parts per million; Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 1 parts per million; Upper detection limit = 10000 parts per million; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Value	Definition
   -1	Below detection limit.

   Range of values
   Minimum:	3
   Maximum:	321
   Units:	parts per million

   Li_ppm_ME-4ACD81

   Lithium values measured in parts per million; Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 10 parts per million; Upper detection limit = 10000 parts per million; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Value	Definition
   -1	Below detection limit.

   Range of values
   Minimum:	10
   Maximum:	70
   Units:	parts per million

   Mo_ppm_ME-4ACD81

   Molybdenum values measured in parts per million; Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 1 parts per million; Upper detection limit = 10000 parts per million; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Value	Definition
   -1	Below detection limit.

   Range of values
   Minimum:	1
   Maximum:	2
   Units:	parts per million

   Ni_ppm_ME-4ACD81

   Nickel values measured in parts per million; Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 1 parts per million; Upper detection limit = 10000 parts per million; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Value	Definition
   -1	Below detection limit.

   Range of values
   Minimum:	4
   Maximum:	68
   Units:	parts per million

   Pb_ppm_ME-4ACD81

   Lead values measured in parts per million; Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 2 parts per million; Upper detection limit = 10000 parts per million; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Value	Definition
   -1	Below detection limit.

   Range of values
   Minimum:	2
   Maximum:	5
   Units:	parts per million

   Sc_ppm_ME-4ACD81

   Scandium values measured in parts per million; Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 1 parts per million; Upper detection limit = 10000 parts per million; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Range of values
   Minimum:	5
   Maximum:	51
   Units:	parts per million

   Zn_ppm_ME-4ACD81

   Zinc values measured in parts per million; Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 2 parts per million; Upper detection limit = 10000 parts per million; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Geochemistry)

   Range of values
   Minimum:	36
   Maximum:	109
   Units:	parts per million

Who produced the data set?

1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
   • Wypych, Alicja
   • Gillis, R.J.
   • Betka, P.M.
   • Decker, P.L.

2. Who also contributed to the data set?

   Primary funding for the lower Cook Inlet work is provided by the State of Alaska. Geologic mapping during the 2015 field season was supported by the U.S. Geological Survey's National Cooperative Geologic Mapping Program (NCGMP) through STATEMAP (award number G15AC00199). The mapping crew thanks NCGMP Coordinator Doug Howard for visiting the study area in July 2015. Land access for this work was permitted by Lake Clark National Park & Preserve, Cook Inlet Region, Inc., and the following Alaska Native village corporations: Chickaloon, Knik, Ninilchik, Salamatof, Seldovia, and Tyonek. Thanks to Buck Mangipane and Jeff Shearer at Lake Clark National Park & Preserve and Jason Brune and Tanisha Gleason of Cook Inlet Region, Inc. for their assistance in permitting.

3. To whom should users address questions about the data?
   Alaska Division of Geological & Geophysical Surveys
   GIS Manager
   3354 College Road
   Fairbanks, AK 99709-3707
   USA
   

   (907)451-5020 (voice)
   dggsgis@alaska.gov
   

   Hours_of_Service: 8 am to 4:30 pm, Monday through Friday, except State holidays

Why was the data set created?

To understand and represent the complexity of the volcanic arc systems in the region, we analyzed ten samples of volcanic rocks, two samples of gabbro sill, and one mafic dike sample for major and minor oxides and trace elements.

How was the data set created?

1. From what previous works were the data drawn?

   Keller, A.S. and others, 1961 (source 1 of 1)

   Keller, A.S., Morris, R.H., and Detterman, R.L., 1961, Geology of the Shaviovik and Sagavanirktok rivers region, Alaska: Professional Paper P 303-D, U.S. Geological Survey, United States.

   Online Links:

   • <http://dggs.alaska.gov/pubs/id/3831>

   Other_Citation_Details: p. 169-222, 6 sheets, scale 1:500,000

   Type_of_Source_Media: paper

   Source_Scale_Denominator: 500000

   Source_Contribution: sample selection

2. How were the data generated, processed, and modified?

   Date: 2015 (process 1 of 3)

   Sample selection - Igneous rocks showing little alteration or weathering were collected for whole-rock major-oxide, minor-oxide, and trace-element analyses to aid in classification and study of petrogenesis and tectonic setting.

   Data sources used in this process:

   • Keller, A.S. and others, 1961

   Date: 2015 (process 2 of 3)

   Sample preparation - Rock samples were processed by ALS using their PREP-31 package. The samples were crushed to better than 70 percent passing 2 mm, and a 250 g split was pulverized to better than 85 percent passing 75 microns. Prior to crushing, samples for whole-rock analysis were trimmed by DGGS staff to remove weathering, and cut surfaces were sanded to remove any saw metal.

   Date: 2016 (process 3 of 3)

   Whole-rock geochemistry - For whole-rock geochemistry samples, major and minor oxides were analyzed using lithium metaborate fusion digestion and ICP-AES (ALS method ME-ICP06). Trace elements, including rare-earth elements, were determined using lithium metaborate fusion digestion and ICP-MS (ALS method ME-MS81). Ag, Cd, Co, Cu, Li, Mo, Ni, Pb, Sc, and Zn were determined using four-acid digestion and ICP-AES (ALS method ME-4ACD81); and As, Bi, Hg, In, Re, Sb, Se, Te, and Tl were determined by aqua regia digestion followed by ICP-MS (ALS method ME-MS42). Total C and S were analyzed by Leco furnace (ALS methods C-IR07 and S-IR08, respectively).

3. What similar or related data should the user be aware of?

   Gillis, R.J., 2014, Cook Inlet program 2013 field studies: Observations and preliminary interpretations from new 1:63,360-scale geologic mapping of the Iniskin Peninsula, lower Cook Inlet, Alaska: Preliminary Interpretive Report PIR 2014-2, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

   Online Links:

   • <http://dx.doi.org/10.14509/27303>

   Other_Citation_Details: 31 p

   Gillis, R.J., 2015, Overview of 2014 energy-focused studies in Susitna basin, south-central Alaska, and preliminary results: Preliminary Interpretive Report PIR 2015-3, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

   Online Links:

   • <http://dx.doi.org/10.14509/29408>

   Other_Citation_Details: 34 p

   Herriott, T.M., 2016, Petroleum-related geologic studies in lower Cook Inlet during 2015, Iniskin-Tuxedni region, south-central Alaska: Preliminary Interpretive Report PIR 2016-1, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

   Online Links:

   • <http://dx.doi.org/10.14509/29532>

   Other_Citation_Details: 78 p

How reliable are the data; what problems remain in the data set?

1. How well have the observations been checked?

   Coordinates of sample locations were determined by the geologists in the field using using hand-held GPS devices. Sample numbers were recorded in the field on sample bags and on field note sheets. The sample location tables were plotted in GIS software to visually verify location accuracy and cross checked for consistency against the sample numbers recorded on the bags. In addition to ALS Minerals' accredited (ISO/IEC 17025-2005) internal quality-control program, DGGS monitored analysis quality with one standard reference material per batch. Lab results were examined by the DGGS geologists to ensure that they are reasonable given the geologic context of the sample. Inconsistencies between the field data and the lab sample numbers listed on the COA (certificate of assay) are noted in the data tables.

2. How accurate are the geographic locations?

   Location data were collected with handheld GPS devices, with location accuracy error typically less than 10 meters.

3. How accurate are the heights or depths?

4. Where are the gaps in the data? What is missing?

   This data release is complete. The data tables have been lightly edited for clarity, but are generally provided as received from the lab.

5. How consistent are the relationships among the observations, including topology?

   not applicable

How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?

Access_Constraints:

This report, map, and/or dataset is available directly from the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys (see contact information below).

Use_Constraints:

Any hard copies or published datasets utilizing these datasets shall clearly indicate their source. If the user has modified the data in any way, the user is obligated to describe the types of modifications the user has made. The user specifically agrees not to misrepresent these datasets, nor to imply that changes made by the user were approved by the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys. The State of Alaska makes no express or implied warranties (including warranties for merchantability and fitness) with respect to the character, functions, or capabilities of the electronic data or products or their appropriateness for any user's purposes. In no event will the State of Alaska be liable for any incidental, indirect, special, consequential, or other damages suffered by the user or any other person or entity whether from the use of the electronic services or products or any failure thereof or otherwise. In no event will the State of Alaska's liability to the Requestor or anyone else exceed the fee paid for the electronic service or product.

1. Who distributes the data set? (Distributor 1 of 1)
   Alaska Division of Geological & Geophysical Surveys
   3354 College Road
   Fairbanks, AK 99709-3707
   USA
   

   (907)451-5020 (voice)
   (907)451-5050 (FAX)
   dggspubs@alaska.gov
   

   Hours_of_Service: 8 am to 4:30 pm, Monday through Friday, except State holidays

   Contact_Instructions:

   Please view our website (<http://www.dggs.alaska.gov>) for the latest information on available data. Please contact us using the e-mail address provided above when possible.

2. What's the catalog number I need to order this data set?

   RDF 2016-3

3. What legal disclaimers am I supposed to read?

   The State of Alaska makes no expressed or implied warranties (including warranties for merchantability and fitness) with respect to the character, functions, or capabilities of the electronic data or products or their appropriateness for any user's purposes. In no event will the State of Alaska be liable for any incidental, indirect, special, consequential, or other damages suffered by the user or any other person or entity whether from the use of the electronic services or products or any failure thereof or otherwise. In no event will the State of Alaska's liability to the Requestor or anyone else exceed the fee paid for the electronic service or product.

4. How can I download or order the data?
   • Availability in non-digital form:

     DGGS publications are available as free online downloads or you may purchase paper hard-copies or digital files on CD/DVD or other digital storage media by mail, phone, fax, or email from the DGGS Fairbanks office. To purchase this or other printed reports and maps, contact DGGS by phone (907-451-5020), e-mail (dggspubs@alaska.gov), or fax (907-451-5050). Payment accepted: Cash, check, money order, VISA, or MasterCard. Turnaround time is 1-2 weeks unless special arrangements are made and an express fee is paid. Shipping charge will be the actual cost of postage and will be added to the total amount due. Contact us for the exact shipping amount.

   • Cost to order the data: Contact DGGS for current pricing

   • Availability in digital form:

     Data format:	ASCII tabular files
     Network links:	<http://dx.doi.org/10.14509/29575>

   • Cost to order the data: Free download

Who wrote the metadata?

Dates:

Last modified: 29-Feb-2016

Metadata author:

Alaska Division of Geological & Geophysical Surveys
Metadata Manager
3354 College Road
Fairbanks, AK 99709-3707
USA

(907)451-5020 (voice)

Metadata standard:

FGDC Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)

Metadata extensions used:

• <http://www.dggs.alaska.gov/metadata/dggs.ext>